Rotary erasing device.



No. 801,104. PATENTED OCT. 3. 1905 H. REESE. ROTARY BRASING DEVICE.

APPLICATION FILED JULY 1, 1905.

UNITED STATES PATENT @FFIGE.

HENRY REESE, OF BALTIMORE, MAR TO ROBERT M. REESE, OF IVASHI [ROTARY ERASING DEVICE.

Specification of Letters Patent.

Patented Oct. 3, 1905.

- Application filed July 1, 1905. Serial No. 267,985.

To all whom it may concern.-

Be it known that I, HENRY REESE, a citizen of the United States, residing in the city of Baltimore, State of Maryland, have invented certain new and useful Improvements in R0- tary Erasing Devices, of which the following is a specification.

The primary object of my invention is to provide an improved device for erasing characters erroneously printed by a type-writing machine, although the device, as will hereinafter appear, may be used for erasing other printed or written matter.

Usually such characters as are erroneously printed by a type-writing machine are erased while the paper is in the machine by an erasive rubber, generally in the form of a disk having a narrow rounded or beveled edge. This is rubbed back and forth over the character until it is obliterated. I have found that by giving a very rapid rotary motion to the disk the work can be more quickly and neatly done, and I have provided a device by means of which the rubber may be easily applied to the desired character and rapidly rotated so as to quickly obliterate it without injuring the paper.

In carrying out my invention I attach a disk of erasive rubber to a shaft provided with a crank-handle for rotating it, and this shaft I mount in a bearing-sleeve, which is adjustable on a supporting-frame, the lower end of which carries a cushioning device adapted to bear on the paper and steady the parts while the disk is being rotated.

In the accompanying drawings I have illustrated the preferred way of carrying out my invention.

Figure 1 shows a front elevation of the device. Fig. 2 shows a side elevation with parts in section. Fig. 3 is a detail view, on a slightly larger scale, partly in section, illustrating particularly the manner in which the shaftis mounted in its bearings and the crankhandle is secured to the shaft.

The supporting-frameAis preferably made, as shown, of a metal rod formed with a handle a at its upper end and carrying at its lower end a cushion B, which is preferably formed of rubber. The rubber. disk C has a hub formed of metal disks 0, and the crank-shaft D extends centrally through the disk and projects from opposite sides thereof. That end of the crank-shaft which carries the disk is shaft in order that its edge screw-threaded, as shown, and carries nuts cl d, by means of which the disk may be held securely on the shaft at any desired position. The opposite end of the shaft D carries a crankhandle E, mounted on a reduced threaded portion 6 of the shaft and fitting against a shoulder c thereon. The handle is held against the shoulder a by a nut 6 The crankshaft is supported in a long bearing-sleeve F, formed on a frame-sleeve G, through which the frame-piece A extends. The frame-sleeve may be held at any desired elevation on the frame A by means of a set-screw H. It will be observed by reference to Fig. 3 that the shoulder 00 bears against one end of the bearing-sleeve F, and that the shoulder e is flush with the opposite end of the bearing-sleeve, while the handle E bears against the shoulder e and lies close to the end of the sleeve. In this way while the crank-shaft is free to rotate easily endwise movement thereof is prevented.

By adjusting the nuts (Z d the disk 0 may be held at any desired position on the crankmay be brought closer to or farther from the cushion B.

It Will be observed that the bearing-sleeve is inclined from the horizontal, by which arrangement the disk C is tilted in order to bring its lower edge nearer to the cushion and to elevate the opposite end of the shaft so that the crank-handle may be more easily rotated.

In using the device the cushion B is pressed upon the paper while it is on the platen and close to the erroneously-printed character. By applying a little pressure the rounded end of the cushion will flatten out, and thus take a firm hold on the paper, so that there is little liability of slipping on the paper, and the paper is prevented from buckling. WVhen the device is correctly positioned to bring the edge of the disk close to the character to be erased, the frame is slightly tilted to bring the edge of the disk into contact with the paper, and then a rotary movement is given to the disk by the crank-handle. A few turns of the handle will neatly erase the erroneously-printed character, and it is not necessary to press the disk tightly on the paper, as the rotary movement with only a slight pressure will do the work efliciently.

While the device is especially designed for use on a type-writing machine, it may be emmar ployed for erasing other Written or printed matter.

I claim as my invcntion- 1. An erasing device comprising a vertical supporting-frame, a rotary eraser mounted thereon, means for adjusting the eraser laterally toward and from its frame and vertically on the frame and means connected \vitli the eraser for operating it.

.2. An erasing device, comprising a rotary disl: eraser, a rod adapted to rest at its end on the paper, a bearing carried by said rod, a shaft mounted in said bearing to Which the disk is attached, and means for rotating the disk.

3. An erasing device, comprising a rotary disk eraser, a rod adapted to rest at its end on the paper, a bearing attached to the rod,

a shaft to which the disk is attached, means i for rotating the disk and means for adjusting the disk on its shaft toward and from the supporting-rod.

4:. An erasing device, comprising a portable supporting-arm, a rotary erasing device, an inclined shaft mounted on the frame and to which the disk is secured, and means for rotating the disk.

5. An erasing device, comprising a portable frame, a cushion of antislipping material at the lower end thereof, a rotary erasing device carried by the frame and means connected therewith for operating it.

6. An erasing device comprising a portable supporting-frame, a rotary erasing device, an inclined shaft mounted on the frame on which the erasing device is adj ustahly mounted and acrank-handle detachably connected with the shaft.

in testimony whereof I have hereunto subscribed my name.

HENRY REESE.

\Vitnesses:

PHILEMON H. TUCK, ANNIE M. BAKER. 

